#include <REGX52.H>

void Delay(unsigned int xms)		//@11.0592MHz
{
	unsigned char i, j;
	
	while(xms)
	{
		i = 2;
		j = 199;
		do
		{
			while (--j);
		} 
		while (--i);
		xms--;
	}
}

void main()
{
	unsigned char LEDnum=0;
	while(1)
	{
					
		if(P3_1==0)
		{
//			Delay(20);
//			while(P3_1==0);
//			Delay(20);
//			P2--;
			
			Delay(20);
			while(P3_1==0);
			Delay(20);
			LEDnum++;
			P2=~LEDnum;			
		}
	}
}